| Standard: | ASTM B111， ASME SB111 | Material Grade: | UNS C44300， CuZn28Sn1 |
|---|---|---|---|
| OD: | 6.35-114.3mm | WT: | 0.5-3.4mm |
| Length: | 6m，or As Required | Surface: | Bright，polished |
| Shape: | Round Shape， ‘U’ Shape | Applications: | Heat Exchanger， Boiler， Petroleum， Condenser， Etc. |
| High Light: | c44300 copper alloy tube， astm b111 copper alloy tube， od 12.7mm alloy steel seamless tube | ||
ASTM B111 UNS C44300 Admiralty Brass Seamless Tube， Copper Alloy Heat Exchanger Tube
UNS C44300 Admiralty Brass， also sometimes referred to as Arsenical Brass， is copper that is alloyed with tin and zinc. Brass 443 tubes have long been used in heat exchangers and condensers because of the good corrosion resistance and excellent heat transfer characteristics of C44300.
Admiralty brass， also known as ASTM B111 UNS C44300， is a copper-zinc alloy with small amounts of tin and trace amounts of other elements. It is commonly used in marine applications due to its high corrosion resistance and excellent thermal conductivity. The seamless tube made from Admiralty brass is manufactured according to ASTM B111 standards， which specify the requirements for seamless copper and copper-alloy tubes for heat exchangers and condensers. These tubes are typically used in a variety of applications， including desalination plants， power plants， and shipbuilding. Admiralty brass seamless tubes are known for their high strength， durability， and resistance to stress corrosion cracking. They are also easy to form and weld， making them a popular choice for various industrial applications. Admiralty brass seamless tubes are a reliable and cost-effective solution for demanding marine and industrial applications that require superior corrosion resistance and thermal conductivity.
Tradename: Admiralty， Arsenical
Type: Wrought
Class: BRASSES Copper-Zinc-Tin Alloys (Tin Brasses)
Chemical Composition:
| % | Elements | |||||
| Cu(1) | Pb | Sn(2) | Zn | Fe | As | |
| (1) Cu + Sum of Named Elements 99.6% min. (2) For tubular products， the minimum Sn content may be 0.9%. | ||||||
| Min (%) | 70.0 | 0.8 | 0.02 | |||
| Max (%) | 73.0 | 0.07 | 1.2 | Rem | 0.06 | 0.06 |
Mechanical Properties:
| Form | Temper | Temper Code | Tensile Strength (ksi) | YS-0.5% Ext (ksi) | Elongation (%) | Rockwell F scale | Rockwell 30T scale | Torsion Modulus (ksi) | Section Size (in) |
| * Measured at room temperature， 68°F (20°C). | |||||||||
| Plate | As Hot Rolled | M20 | 48 Typ | 18 Typ | 65 Typ | 70 Typ | 5.8 Typ | 1 | |
| Strip | Light Anneal | O50 | 48 Typ | 14 Typ | 62 Typ | 0.04 | |||
| Soft Anneal | O60 | 45 Typ | 13 Typ | 69 Typ | 0.04 | ||||
| Tube | Nominal Grain Size 0.025 mm | OS025 | 53 Typ | 22 Typ | 65 Typ | 75 Typ | 37 Typ | ||
| Wire | Nominal Grain Size 0.015 mm | OS015 | 55 Typ | 60 Typ | 0.08 | ||||
Physical Properties:
| Melting Point – Liquidus°F | 1720 |
| Melting Point – Solidus°F | 1650 |
| Densitylb/cu in. at 68°F | 0.308 |
| Specific Gravity | 8.53 |
| Electrical Conductivity% IACS at 68°F | 25 |
| Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F | 64 |
| Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F) | 11.2 |
| Specific Heat CapacityBtu/ lb /°F at 68°F | 0.09 |
| Modulus of Elasticity in Tensionksi | 16000 |
| Modulus of Rigidityksi | 6000 |
Common Fabrication Processes
· Bending
· Forming
· Machining
Thermal Properties:
| Treatment | Minimum* | Maximum* |
| Annealing | 800 | 1100 |
| Hot Treatment | 1200 | 1450 |
Applications:
Heat Exchangers
Boilers
Condensers
Oil and Gas Plants
Petroleum Industries
Petrochemical Industries
Cemet Plants
Food Processing Industries
Fired Heaters
Power Generation
